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IMPROVEMENT IN TRUNK LOCKS.

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TO .ALL W'HOM 1T MAY CONCERN:

Be it known that I, E. A. G. ROULSTONE, of Roxbury, in the county of Norfolk, and State of Massachusetts, have invented an improved Trunk Lock; and I do hereby declare that the following, taken iu connection with the drawings which accompany and form part of this specification, is a description of my invention, suincient to enable those skilled in the art to practise it. j l

The invention relates to the construction of spring locks for trunks, and has p rtieular reference to such construction or arrangement of the mechanism thereof as shall dn away with the co.nmon hasp, which swings outwardly from' the trunk, by employing a hasp or bolt, swinging in the same plane with the locking mechanism, which bolt is locked by pressing it into position, and which unlocks by springing outward from such mechanism when the tumblers or levers which hold it in position are thrown back by the key. Also, to the construction of the bolt, by which any strain upon the same, when the trunk is fastened, .is not received by the locking levers, but by `the casing ot' the lock and the frame of the trunk.

The drawings represent a lock embodying my invention, A showing a front view, with the spring bolt thrown back from the'tumblers or l'evers, and B an interior view of' the lock, with thc bolt fastened therein.

a denotes the lock-plate, and b the hasp or bolt-plate, each of which is applied to the front of the trunk; c and d theouter plates, between which'and the plates a and b the locking mechanism is contained. The turn-v blers are seen at e, they being hung and swinging on a pin,f, and being held normally in position by springs, g, and a stop, z. Each tumbler basa hook or latch projection, z', with which a hook or latch, k, on the bolt l interlocks, as seen at B. This bolt swings on a pin, fm, and is held normally in position, (with the bolt -unlatched from the tumblers,) by a spring, n; and where the bolt enters the lock, the top plate or flange r of the plate c is clit away, as seen at B, and the bolt is out awlay. so as to form a projection, as seen at o, so that when locked this projection extends directly under the ange or top plate r of thelock, and where a pimp, extends from the same through the trunk frame. When .the bolt is unlocked, it stands in the position seen at yA, held there by the spring n, in which position it can be raised vertically with the lid of the trunk.-

To lock it, the finger is applied to a projection, g, and the bolt swung down into vertical position, in doing which the end of the bolt strikes the tumblers and; depresses them until the latch on the bolt passies the latches or projections on theA tumblers, Whemthe tumblers spring up, and the bblt is locked in position, as seen at B. It will be observed that when thus locked, the tumblers. merely hold the boltfrom springing out, the upper strain of the bolt, produced 'by any strain upon the lid, being directly upon the flange and pin p. .This coustructiou renders the lock very strong, and not lliable to get out of order, or to have any of' the mechanism displaced. To unlock the bolt, the application and turning ofthe key, (in the usual manner,) force down the tumbler projections until they drop below the latch -ou the bolt, when the s out, without any application of the hand thereto.

I claim thecombination of the spring bolt and tumblers e, or locking mechanism, when constructed and arranged to lock and unlock, substantially as set forth. v i' Also, combining with the pr bolt, substantially as described.

E. A. G. ROULSTQNE. Witnesses:

J. B. Caesar, F. GoULn.

pring on the bolt will cause it to fly ojection o of the bolt the vflange r, with its pin p, for receiving the strain of the 

